but part of the reality is, this is one of the cities that leads the nation in murder, and the disparity, according to a police executive research forum study that brought all the police chiefs together, was it's what happens to the arrests after they get to court. now, take new york. they have a three- to five-year mandatory minimum. that means that if a gun charge ends up in front of a judge, you're almost certain to go to jail for three years. in chicago, you've got a 50-50 chance that you're not going to do any jail time almost. 33% of those cases are dismissed outright. >> pelley: so if you're caught with a gun in new york, whether you have used it in a crime or not, you're going to jail for three to five years, but not in chicago. >> reporter: but not in chicago and not in most cities, because they don't have those mandatory minimums, and the prosecutors and the judges exercise that discretion. the bottom line is, if you're a criminal thinking, "do i take that gun when i leave the house today or not?" the risk factor in a lot of major cities is pretty low that, even if you're caugh